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Statement Ebullioscopy or cryscopy can...

Statement Ebullioscopy or cryscopy can not be used for the determination of mol. wt. of polymers.
Explanation High molecular weight solute leads to very low value of `Delta T_(b)` or `Delta T_(f)`

A

`S` is correct but `E` is wrong.

B

`S` is wrong but `E` is correct.

C

Both `S` and `E` are correct and `E` is correct explanation of `S`.

D

Both `S` and `E` are correct but `E` is not correct explanation of `S`.

Text Solution

Verified by Experts

The correct Answer is:
C
If mol. Wt. is low, `Delta T_(b)` or `Delta T_(f)` being low can be not be read out accurately. A little error in measurement of `Delta T_(b)` will cause abnormal values of mol.wt.
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Assertion: Ebullioscopy or cryoscopy cannot be used for the determination of molar mass of polymers. Reason:High molar mass solute leads to very low value of DeltaT_(b)orDeltaT_(f)

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